Cylindrical camera thermal shield

ABSTRACT

An information handling system peripheral camera is built by inserting a subassembly into a cylindrical housing and enclosing the subassembly with a bezel at the front and cover at the rear. The cylindrical housing is extruded with aluminum to have seams formed along the length of the interior. The seams provide alignment of the subassembly and are machined at the front and rear to form threads that accept screws to couple the bezel and rear cover to the cylindrical housing. To hide the screws, a back plate couples over the rear cover and an opaque treatment is applied to a circumference of a cover glass placed over the bezel.

CROSS REFERENCE TO RELATED APPLICATIONS

U.S. patent application Ser. No. 17/325,494, filed May 20, 2021,entitled “Camera Stand with Integrated Tilt Hinge” by inventors Peng LipGoh, Celia Law, and Deeder M. Aurongzeb, describes exemplary methods andsystems and is incorporated by reference in its entirety.

U.S. patent application Ser. No. 17/325,503, filed May 20, 2021,entitled “Camera and Mount” by inventors Celia Law, Chun Long Goh, PengLip Goh, Deeder M. Aurongzeb, and Wai Mun Lee, describes exemplarymethods and systems and is incorporated by reference in its entirety.

U.S. patent application Ser. No. 17/325,501, filed May 20, 2021,entitled “Camera and Lens Cap” by inventors Celia Law, Chun Long Goh,Peng Lip Goh, Deeder M. Aurongzeb, and Wai Mun Lee, describes exemplarymethods and systems and is incorporated by reference in its entirety.

U.S. patent application Ser. No. 17/325,518, filed May 20, 2021,entitled “Cylindrical Camera and Integrated Support” by inventors PengLip Goh, Celia Law, and Deeder M. Aurongzeb, describes exemplary methodsand systems and is incorporated by reference in its entirety.

BACKGROUND OF THE INVENTION Field of the Invention

The present invention relates in general to the information handlingsystem cameras, and more particularly to an information handling systemcylindrical camera thermal shield.

Description of the Related Art

As the value and use of information continues to increase, individualsand businesses seek additional ways to process and store information.One option available to users is information handling systems. Aninformation handling system generally processes, compiles, stores,and/or communicates information or data for business, personal, or otherpurposes thereby allowing users to take advantage of the value of theinformation. Because technology and information handling needs andrequirements vary between different users or applications, informationhandling systems may also vary regarding what information is handled,how the information is handled, how much information is processed,stored, or communicated, and how quickly and efficiently the informationmay be processed, stored, or communicated. The variations in informationhandling systems allow for information handling systems to be general orconfigured for a specific user or specific use such as financialtransaction processing, airline reservations, enterprise data storage,or global communications. In addition, information handling systems mayinclude a variety of hardware and software components that may beconfigured to process, store, and communicate information and mayinclude one or more computer systems, data storage systems, andnetworking systems.

Information handling systems often interact with peripheral devices,such as keyboards, mice and cameras. Cameras are typically used tosupport videoconferences in which visual images captured by cameras areexchanged so that end users can communicate while viewing each other.Typically, videoconferences are performed with cameras that haverelatively low resolution. The use of low resolution is driven in partby the amount of bandwidth consumed by communication of videoinformation. In addition, low resolution is driven by the footprint oftypical Web cameras, which generally do not have the size to supporthigh quality lenses. For example, cameras integrated in portableinformation handling systems tend to have a restricted focal length dueto the thickness of typical portable information handling systemhousings. Peripheral Web cameras typically have a larger footprint sothat higher quality lenses may be included that capture higherresolution visual images than integrated cameras. Generally, even withlarger housing footprints, Web cameras tend to limit resolution to HighDefinition visual images as Ultra High Definition or 4K cameras and havelarge bandwidth demands.

Recently, enterprises have experienced an increased reliance onvideoconferences to interact internally between employees and externallywith customers and vendors. Although lower resolution Web cameras aresufficient for many daily uses, in many situations, higher quality videoimages are desired. For instance, in conferences that involve seniorexecutives or high government officials, higher resolution video imagesare generally desired. Often, such high level conferences are done fromlarge conference rooms and involve a number of participants. Generally,high resolution cameras with high quality lenses offer a number ofadvantages in such scenarios. One advantage is that greater focal lengthwill allow one camera to provide high quality video images at differentranges through zoom functionality. Another advantage is that higherresolution offers greater flexibility for digital zoom, pan and tiltfunctions, such as by cropping an image to capture a participant with aclose-up view. When a camera provides higher resolution visual images, anumber of additional integrated functions may be provided at the camera,such as artificial intelligence analysis that aids with facialrecognition and gesture inputs. For example, processing resources addedto the camera monitor visual information for desired attributes that arereported to the information handling system, such as an end user'sidentity.

One difficulty with including higher resolution capability in aperipheral Web camera is that additional interior room generally neededfor higher resolution and greater integrated intelligence can result inawkward form factors with unsatisfactory aesthetics, particularly whenused in profile video conferences. Assembly of the camera to includehigh resolution lenses and additional processing components can resultin a complex internal arrangement that does not readily fit into smallerform factors. For instance, an external housing of the camera tends toinclude screws and other assembly mechanisms that are visible to the enduser. Another difficulty is that processing components included toprovide artificial intelligence functions tend to generate heat thatdoes not dissipate readily from a camera housing having a minimalfootprint. High internal temperatures may result in a housing skintemperature that limits end user interactions, such as to adjust thecamera line of sight or move the camera location.

SUMMARY OF THE INVENTION

Therefore, a need has arisen for a system and method which integrates aperipheral camera in a cylindrical housing.

A further need exists for a system and method that manages thermalenergy generated within a cylindrical camera housing.

In accordance with the present invention, a system and method areprovided which substantially reduce the disadvantages and problemsassociated with previous methods and systems for assembly of aperipheral camera in a housing. A cylindrical housing extruded fromaluminum or other material accepts a subassembly slid into an interiorthat contains a camera module and processing resources in a securemanner. Coupling a bezel at a front face and rear cover at a rear facecaptures the subassembly in the cylindrical housing for a robustassembly with a minimalist footprint and appearance. Wrapping thesubassembly within the cylindrical housing with a graphene sheet createsa thermal barrier to reduce transfer of excess thermal energy fromprocessing resources within the housing to the housing skin.

More specifically, an information handling system having a processor andmemory interfaces with a peripheral camera that captures visual imagesto support video conferences. The peripheral camera is assembled into acylindrical housing by coupling a camera module to a subassembly sizedto slide into the cylindrical housing. For example, the cylindricalhousing is extruded aluminum having open front and rear faces and threeseams that run along the length of the housing. At the front and rearfaces, the seams are machined to form threads to couple to screws. Abezel couples to the front face with screws engaged in the threads andcovered from sight by an opaque treatment of a cover glass outercircumference coupled over the bezel. A rear cover couples to the rearface with screws engaged in the thread and covered from sight by a backplate that snaps into position. The subassembly is built from an upperframe and lower frame that snap together to capture the camera module ata front side with snaps and snap connectors integrated in the upperframe and lower frame. A processing resource couples to the upper frame,such as processor that interfaces with the camera to process visualimages for facial recognition and artificial intelligence functions. Acommunications processing resource, such as a USB Type C hub couples tothe lower frame and interfaces with a communications port disposed at abottom of the cylindrical housing. Ribs formed in the lower frame engageagainst the cylindrical housing interior to provide support to hold thecamera module in position. A graphene sheet wraps around the subassemblyin a cylinder shape that provides a barrier to reduce transfer ofthermal energy from the processing resource to the cylindrical housing.For example, the graphene sheet couples to the subassembly so that anair gap is maintained between the outer surface of the graphene sheetand the cylindrical housing. Alternatively, the graphene sheet mayinterface with a portion of the cylindrical housing having a reducedexposure to an end user, such as the rear cover, so that excess thermalenergy is rejected from within the cylindrical housing.

The present invention provides a number of important technicaladvantages. One example of an important technical advantage is that aperipheral camera integrates in a cylindrical housing without exposingcoupling devices used to assemble the camera. An elegant appearance isprovided with ease of assembly for high yield production throughput withhigh quality, durability and reliability. The cylindrical housingassembles through front and rear openings by inserting a subassemblyinto the cylindrical housing interior aligned by an internal structureand coupled to the housing a coupling points located with the housing. Acamera module and various processing components are assembled on asubassembly support that mounts in the cylindrical housing interiorreinforced by ribs to provide a rigid and robust internal structure thatprotects the camera module and processing components. In the event of asystem failure, the internal subsystem is slid out from the cylindricalhousing interior to provide ready access to the camera module andprocessing components for repair. A graphene shield disposed around thesubassembly aids in thermal rejection and helps to avoid excessivecylindrical housing skin temperatures. The cylindrical housing andinternal subsystem offer an aesthetically pleasing and simple to useperipheral camera with optimal performance for high definition visualimage capture in a minimal footprint having well-moderated thermalexterior conditions.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention may be better understood, and its numerousobjects, features and advantages made apparent to those skilled in theart by referencing the accompanying drawings. The use of the samereference number throughout the several figures designates a like orsimilar element.

FIG. 1 depicts a block diagram of an information handling systeminterfaced with a peripheral camera that supports videoconferencing;

FIG. 2 depicts a side cutaway view of a camera configured to couple to astand and lens cap with integrated magnets;

FIGS. 3A, 3B, 3C, 3D, 3E, 3F, 3G and 3H depict the peripheral cameracylindrical housing and subassembly;

FIGS. 4A and 4B depict the peripheral camera subassembly supporting acamera module and processing resources;

FIG. 5 depicts the peripheral camera cylindrical housing aligned forinsertion with the subassembly; and

FIGS. 6, 6A, 6B, 6C, and 6D depict a graphene sheet wrapped around thesubassembly for insertion into the cylindrical housing as a thermalbarrier.

DETAILED DESCRIPTION

An information handling system peripheral camera housing of extrudedaluminum supports a camera module and processing resources with asubassembly slid into the housing interior and wrapped in a graphenesheet for thermal management. For purposes of this disclosure, aninformation handling system may include any instrumentality or aggregateof instrumentalities operable to compute, classify, process, transmit,receive, retrieve, originate, switch, store, display, manifest, detect,record, reproduce, handle, or utilize any form of information,intelligence, or data for business, scientific, control, or otherpurposes. For example, an information handling system may be a personalcomputer, a network storage device, or any other suitable device and mayvary in size, shape, performance, functionality, and price. Theinformation handling system may include random access memory (RAM), oneor more processing resources such as a central processing unit (CPU) orhardware or software control logic, ROM, and/or other types ofnonvolatile memory. Additional components of the information handlingsystem may include one or more disk drives, one or more network portsfor communicating with external devices as well as various input andoutput (I/O) devices, such as a keyboard, a mouse, and a video display.The information handling system may also include one or more busesoperable to transmit communications between the various hardwarecomponents.

Referring now to FIG. 1 , a block diagram depicts an informationhandling system 10 interfaced with a peripheral camera 36 that supportsvideoconferencing. In the example embodiment, information handlingsystem 10 processes information with processing components disposed in ahousing 12. For example, a central processing unit (CPU) 14 executesinstructions that process information with the instructions andinformation stored in a random access memory (RAM) 16. An embeddedcontroller 18 manages physical operating conditions within housing 12,such as application of power and maintaining thermal constraints, andalso manages interactions with peripheral devices, such as a keyboardand mouse. A graphics processing unit (GPU) 20 interfaces with CPU 14and further processes the information to generate visual images, such asby generating pixel values that define pixel colors for presentation atdisplay 34. A solid state drive (SSD) 22 provides non-transitory memory,such as flash, that stores information during system power down states.For example, the instructions may include an operating system 24 storedin SSD 22 and retrieved to RAM 16 with boot code executed on embeddedcontroller 18 at system power up.

GPU 20 interfaces through a display port 32 and display cable 42 with adisplay 34 that presents information as visual images, such as byscanning pixel values to a display panel having rows and columns ofpixels. In the example embodiment, a first peripheral camera 36 isillustrated in two different positions relative to display 34. A bracket38 couples camera 36 to an upper side of display 34 to capture visualimages of an end user viewing display 34. A second peripheral camera 36rests on a tripod 40 to capture visual images of an end user viewing thedisplay from a location in between the end user and the display.Multiple viewing locations for camera 36 provides an end user withincreased flexibility regarding the quality of a visual image capturedby camera 34. As is described below in greater detail, camera 36 mayselectively detach and attach from each of bracket 38 and tripod 40.Camera 36 captures visual images and communicates the visual imagesthrough a USB cable 30 and to a USB port 28 for use by informationhandling system 10, such as to support a videoconference. In the exampleembodiment, a camera manager 26, such as driver of operating system 24,provides a camera interface 27 for presentation at display 34 to managecamera settings and present visual images captured by camera 36.

Referring now to FIG. 2 , a side cutaway view depicts camera 36configured to couple to a stand and lens cap with integrated magnets. Inthe example embodiment, camera 36 houses lenses 46 in a cylindricalhousing 44 to capture visual images with a light sensor 48. A processingresource 50, such as a microcontroller, interfaces with light sensor 48to communicate captured visual images out of camera 36 through a USBport 52 integrated in an opening at a bottom side of cylindrical housing44. A lens cover glass 54 at a front face of cylindrical housing 44protects lens 46 from contaminants while providing a transparentmaterial through which light passes for capture through lens 46 at lightsensor 48. In the example embodiment, a pair of lens cap magnets 58 aredisposed proximate lens cover glass 54 to attract ferromagnetic materialintegrated in a lens cap so that the lens cap covers lens cover glass54. At a rear face 56 of cylindrical housing 44, lens cap storagemagnets 60 are disposed to attract the lens cap as a place of storagewhen camera 36 is active capturing visual images. Proximate USB port 52,an opening in cylindrical housing 44 integrates a stand magnet 62 thatuses magnetic attraction to couple to a stand of bracket 38 or tripod40, as set forth in greater detail below. The cylindrical shape of thehousing, including its length, provides an efficient layout for opticalimage capture so that a UHD 4K light sensor can be used to capture highquality visual images. Greater detail regarding magnetic coupling of thecamera to a stand and lens cap is provided in U.S. patent applicationSer. No. 12/487,701, which is incorporated herein as if fully set forth.

Referring now to FIGS. 3A, 3B, 3C, 3D, 3E, 3F, 3G and 3H, the peripheralcamera cylindrical housing 44 and subassembly 74 are depicted. FIG. 3Adepicts cylindrical housing 44, which is formed by extrusion of aluminumor other suitable material. The extrusion of aluminum is performedthrough a mold that defines 3 seams 64 along the full length of theinterior surface of cylindrical housing 44. After extrusion is completedto output a cylinder with open front and rear faces, each end of seam 64at the front and rear faces is machined to form threads 66 that acceptscrews. FIG. 3A depicts the front face of cylindrical housing 44 withthreads 66 formed at each of three seams 64, and FIG. 3B depicts therear face of cylindrical housing 44 with threads 66 formed at theopposing ends of seams 64. The bottom side of cylindrical housing 44 hasa flat surface orientation datum 68 machined through seam 64, such aswith a CNC operation. As is illustrated by FIG. 3C, orientation datum 68define a separation between a stand member opening 70 and acommunication port opening 72. FIG. 3C includes for illustrationpurposes magnet 62 disposed in stand member opening 70 and acommunication port 52 disposed in communication port opening 72. In theexample embodiment, magnet 62 and communication port 52 couple to asubassembly 74 depicted by FIG. 3D and having a guide 76 to alignsubassembly 74 at the orientation datum 68. Subassembly 74 is depictedfrom a bottom view with guide 76 positioned to align subassembly 74 whenslid into cylindrical housing 44. Subassembly 74 has a cylindrical outershape with ribs 78 sized to engage against the inner wall of cylindricalhousing 44 to hold subassembly 74 in a substantially fixed position andorientation, as defined by the interaction of three guides 76 with threeseams 64 of cylindrical housing 44.

When fully assembled as an electronic device enclosure, cylindricalhousing 44 has subassembly 74 captured in the interior and enclosed atthe front and rear faces. FIG. 3E depicts an inner side of a rear cover80 that couples to the rear face of the cylindrical housing. In theexample embodiment, an inner plastic portion 84 couples by adhesive orother means with an outer aluminum portion 82 having three openingsaligned with the seam threads 66 so that screws 86 can insert into theopenings at the outer side of rear cover 80 to couple rear cover 80 tocylindrical housing 44, as is depicted by FIG. 3F. FIG. 3G depicts analuminum back plate 88 that snaps into place over rear cover 80 to hidescrews 86 and provide a clean appearance to the assembled electronicdevice. As is described in greater detail below, one example embodimenttransfers excess thermal energy generated by processing componentswithin cylindrical housing 44 to rear cover 80 so that the excessthermal energy is rejected from the rear face rather than thecylindrical surface. FIG. 3H depicts a front face view of cylindricalhousing 44 having a bezel 90 couple over the front opening. Bezel 90couples to threads 66 at the front face with screws 86 and includes aninner portion having an opening through which the camera can capturevisual images. A cover glass 92 couples over bezel 90 and has an opaqueouter circumference that hides screws 86 so that the full cameraassembly appears to have no coupling devices. Although the exampleembodiment houses a camera, other types of electronic devices may behoused in alternative embodiments.

Referring now to FIGS. 4A and 4B, the peripheral camera subassembly 74is depicted supporting a camera module 110 and processing resources 50.In the example embodiment, subassembly 74 is assembled from a lowerframe 102 that couples to an upper frame 94 by integrated snaps 100aligned to couple to snap couplers 116. Upper frame 94 supports acircuit board 96 at an upper surface that interfaces with processingresource 50. Processing resource 50 is, for example, a processor havingartificial intelligence capability to process visual images captured bycamera module 110, such as to perform facial recognition. A slot 98formed in upper frame 94 provides a path for cable 114 of a sensorassembly 112 to pass to circuit board 96 for use of sensor inputs byprocessing resource 50. Lower frame 102 includes a second circuit board104 coupled to an upper surface and including a communication hubprocessing resource 106, such as to support an interface with a USB TypeC communication port disposed at the bottom of cylindrical housing 44. Acamera module cable 108 provides communication of camera visual imagesfrom camera module 110 to circuit board 96. In the example embodiment,pins on the upper circuit board 96 bottom surface couple to a pininterface of the second circuit board 104 when upper frame 94 couplesover top of lower frame 102. FIG. 4B depicts the upper frame 94 coupledto the lower frame 102 by engagement of snaps 100 to snap connectors116. Bezel 90 is depicted aligned in front of camera module 110 with thecamera arranged to capture visual images through the central opening.The coupling of upper frame 94 to lower frame 102 captures and securecamera module 110 in place.

Referring now to FIG. 5 , the peripheral camera cylindrical housing 44is depicted aligned for insertion with the subassembly 74. Guides 76 ofsubassembly 74 engage seams 64 of the interior or cylindrical housing 44to provide an alignment having the communications port and magnetintegrated in subassembly 74 with openings formed in the bottom ofcylindrical housing 44. Once subassembly 74 fully inserts, such as isdefined by the orientation datum within the interior of cylindricalhousing 44, rear cover 80 couples to threads 66 of seams 64 with screws86 to capture the subassembly in place. Back plate 88 snaps over rearcover 80 to hide the coupling screws. Similarly, bezel 90 and coverglass 92 capture subassembly 74 within the interior of cylindricalhousing 44 as described above.

Referring now to FIGS. 6, 6A, 6B, 6C, and 6D, a graphene sheet 118 isdepicted wrapped around the subassembly 74 for insertion into thecylindrical housing as a thermal barrier. Processing resources disposedin an aluminum housing can generate sufficient thermal energy as abyproduct of executing instructions that the skin of the housing heatsto a range that can result in end user discomfort. FIG. 6A depicts agraphene sheet wrapped in a cylinder shape sized to slide into thecylindrical housing. The detailed view depicts a corrugated pattern 120formed in graphene sheet 118 that effectively increases the surface areaof the graphene sheet. Graphene sheet 118 is layers of graphene thathave a high thermal conductivity along the length of the sheet and alower thermal conductivity normal to the length of the graphene sheet.The effect of the thermal conductivity characteristics of graphene isthat excess thermal energy generated in an interior of the cylindershape is managed with reduced conductivity through the graphenematerial. Excess thermal energy absorbed by the graphene material fromthe cylinder interior is spread along the length of the graphenematerial where thermal conductivity is greatest and thereby thermaldifferential and transfer to the aluminum cylindrical housing isreduced. In one example embodiment, the surface area of the inside ofthe cylinder shape of graphene sheet 118 is corrugated to increase thesurface area that can absorb thermal energy from the interior area whilea flat out surface reduces the surface area of graphene that cantransfer thermal energy to the cylindrical housing. In one embodiment,graphene sheet 118 may include a direct thermal interface with theprocessing resource in the cylindrical housing interior to encouragethermal rejection. In addition, graphene sheet 118 may have a thermalinterface with a portion of the outer surface of the electronic deviceat which higher skin temperatures are acceptable, such as the rear coverwhere a metal portion may act as an internal heat sink. Various types ofthermal transfer may be used based upon anticipated thermal conditionsat an electronic device interior. In one example embodiment, graphenesheet 118 may be disposed at the subassembly so that no contact is madebetween graphene sheet 118 and the outer housing.

FIG. 6B depicts an example embodiment having graphene sheet 118 coupledto subassembly 74 to avoid contact with the outer housing. In theexample embodiment, a rib slot 124 is cut in the graphene sheet to fitover ribs of the subassembly so that contact with the external housingis avoided. FIG. 6C depicts a front sectional view of the camera module110 having graphene sheet 118 disposed between cylindrical housing 44and subassembly 74 to act as a thermal barrier that reduces thermaltransfer from processing resources within subassembly 74 to the exteriorsurface of cylindrical housing 44. In the example embodiment, graphenesheet 118 defines an air gap with cylindrical housing 44 to reducethermal transfer. FIG. 6D depicts an example of graphene sheet 118having a double-sided corrugated pattern 120 surface and defining an airgap with cylindrical housing 44. In an embodiment that transfers thermalenergy 122 from the processing resource to the rear cover, a strip ofgraphene material may extend from the graphene sheet 118 to contact theprocessing resource or a heat sink coupled to the processing resource.Similarly, at the rear side of cylindrical housing 44 a strip ofgraphene may extend out and contact the rear cover at a metallicportion. Additional heat sink structures may be added to aid inrejection of excess thermal area at portions of the rear cover protectedfrom touch by an end user, such as with venting through the rear side.As is described above, where thermal energy is not expected to exceedoperating constraints within the housing, complete separation ofgraphene sheet 118 from the housing may be desired so that energytransfer to the cylindrical housing in minimized.

Although the present invention has been described in detail, it shouldbe understood that various changes, substitutions and alterations can bemade hereto without departing from the spirit and scope of the inventionas defined by the appended claims.

What is claimed is:
 1. A camera comprising: a cylindrical housing havingopen front and rear faces; a camera module operable to capture visualimages; a subassembly configured to secure the camera module and slideinto the cylindrical housing to hold the camera module in thecylindrical housing at a fixed orientation; processing componentscoupled to the subassembly and interfaced with the camera module, theprocessing components processing the visual information and generatingthermal energy as a byproduct of the processing; and a graphene sheetformed as a cylinder and disposed around the subassembly.
 2. The cameraof claim 1 wherein the graphene sheet has a corrugated pattern at aninner surface.
 3. The camera of claim 2 wherein the graphene sheet has acorrugated pattern at an outer surface.
 4. The camera of claim 1 furthercomprising: a rear cover coupled to a rear side of the cylindricalhousing; and a bezel coupled to a front side of the cylindrical housing,the bezel having an opening aligned with the camera module.
 5. Thecamera of claim 4 wherein the graphene sheet is disposed free of contactwith the rear cover and the bezel.
 6. The camera of claim 4 wherein thegraphene sheet thermally couples with the rear cover.
 7. The camera ofclaim 1 further comprising: plural ribs formed in the subassembly tosupport the subassembly by contact against an interior of thecylindrical housing; wherein the graphene sheet has slot openingsaligned with one or more of the plural ribs.
 8. The camera of claim 1wherein the graphene sheet is held in a spaced relationship relative toan interior of the cylindrical housing.
 9. The camera of claim 1 whereinthe processing components include an artificial intelligence processoroperable to process the visual images.
 10. A method for assembly of acamera, the method comprising: extruding a cylinder having an interior;assembling a camera module and processing resource into a subassembly;coupling a graphene sheet around the subassembly; sliding thesubassembly into the cylinder; and interceding with the graphene sheetof thermal energy transfer from the processing resource to the housing.11. The method of claim 10 further comprising: corrugating an innersurface of the graphene sheet; and coupling the inner surface towardsthe subassembly in a cylinder shape around the subassembly.
 12. Themethod of claim 10 further comprising: corrugating an inner and outersurface of the graphene sheet; and defining an air gap between thegraphene sheet and cylinder inner surface with the subassembly slid intothe cylinder.
 13. The method of claim 11 further comprising: coupling arear cover to a rear side of the cylinder opposite the camera module;and coupling a bezel to a front side of the cylinder proximate thecamera module, the bezel having an opening aligned with the cameramodule.
 14. The method of claim 13 further comprising disposing thegraphene sheet within the cylinder without the graphene sheet contactingthe cylinder, the rear cover and the bezel.
 15. The method of claim 13further comprising disposing the graphene sheet within the cylinder incontact with the rear cover and without contacting the cylinder andbezel.
 16. The method of claim 10 further comprising: supporting thesubassembly with ribs of the subassembly engaged against the cylinderinterior; and disposing slots formed in the graphene sheet at the ribsto separate the graphene sheet from the cylinder interior.
 17. Anelectronic device housing comprising: an extruded aluminum cylinderhaving open front and rear faces; a subassembly configured to slide intothe extruded aluminum cylinder supported against an interior surface ofthe aluminum extruded cylinder, the subassembly further configured tocouple to processing resources, the subassembly having ribs that engageagainst the extruded aluminum cylinder; and a graphene sheet disposed asa cylinder around the subassembly to accept thermal energy released bythe processing resources, the graphene sheet having slots formed at theribs to fit around the subassembly.
 18. The electronic device housing ofclaim 17 wherein the graphene sheet has a corrugated surface.
 19. Theelectronic device housing of claim 17 wherein the graphene sheet isdisposed to maintain an air gap with the extruded aluminum cylinder. 20.The electronic device housing of claim 17 further comprising a rearcover coupled to the rear face of the extruded aluminum cylinder, thegraphene sheet in contact with the rear cover.